[Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24

Open
Open
[Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24

Description

@itkhanz
itkhanz
opened on Apr 15, 2025

Steps to reproduce:

  • Install pyenv Python package manager

  • Install python 3.13.3

pyenv install 3.13.3

  • Make python 3.13.3. global

pyenv global 3.13.3

  • Install mitmproxy version 9.0.0

pipx install mitmproxy==9.0.0

  • install websockets

pipx install websockets

  • Run mitmproxy from terminal

mitmproxy or mitmproxy --version

Actual Result:

Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'

Expected Result:

mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8

Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit

More Information

It seems that this modeule has been marked deprecated and removed from the latest python
https://peps.python.org/pep-0594/#imghdr

Test Environment

Mac Silicon chip
macOS Sequoia 15.4
websockets 15.0.1

Activity

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      , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
       blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

      Skip to content
      [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
      Open
      Open
      [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
      Description
      @itkhanz
      itkhanz
      opened on Apr 15, 2025
      Steps to reproduce:
      • Install pyenv Python package manager
      • Install python 3.13.3
      pyenv install 3.13.3
      • Make python 3.13.3. global
      pyenv global 3.13.3
      • Install mitmproxy version 9.0.0
      pipx install mitmproxy==9.0.0
      • install websockets
      pipx install websockets 
      • Run mitmproxy from terminal
      mitmproxy or mitmproxy --version
      Actual Result:
      Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
      Expected Result:
      mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
      Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
      More Information
      It seems that this modeule has been marked deprecated and removed from the latest python
      https://peps.python.org/pep-0594/#imghdr
      Test Environment
      Mac Silicon chip
      
macOS Sequoia 15.4
      
websockets 15.0.1
      Activity
      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

          Skip to content
          [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
          Open
          Open
          [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
          Description
          @itkhanz
          itkhanz
          opened on Apr 15, 2025
          Steps to reproduce:
          • Install pyenv Python package manager
          • Install python 3.13.3
          pyenv install 3.13.3
          • Make python 3.13.3. global
          pyenv global 3.13.3
          • Install mitmproxy version 9.0.0
          pipx install mitmproxy==9.0.0
          • install websockets
          pipx install websockets 
          • Run mitmproxy from terminal
          mitmproxy or mitmproxy --version
          Actual Result:
          Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
          Expected Result:
          mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
          Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
          More Information
          It seems that this modeule has been marked deprecated and removed from the latest python
          https://peps.python.org/pep-0594/#imghdr
          Test Environment
          Mac Silicon chip
          
macOS Sequoia 15.4
          
websockets 15.0.1
          Activity
          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Type
            No type
            Projects
            No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
              Open
              Open
              [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
              Description
              @itkhanz
              itkhanz
              opened on Apr 15, 2025
              Steps to reproduce:
              • Install pyenv Python package manager
              • Install python 3.13.3
              pyenv install 3.13.3
              • Make python 3.13.3. global
              pyenv global 3.13.3
              • Install mitmproxy version 9.0.0
              pipx install mitmproxy==9.0.0
              • install websockets
              pipx install websockets 
              • Run mitmproxy from terminal
              mitmproxy or mitmproxy --version
              Actual Result:
              Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
              Expected Result:
              mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
              Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
              More Information
              It seems that this modeule has been marked deprecated and removed from the latest python
              https://peps.python.org/pep-0594/#imghdr
              Test Environment
              Mac Silicon chip
              
macOS Sequoia 15.4
              
websockets 15.0.1
              Activity
              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Type
                No type
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

                  Skip to content
                  [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
                  Open
                  Open
                  [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
                  Description
                  @itkhanz
                  itkhanz
                  opened on Apr 15, 2025
                  Steps to reproduce:
                  • Install pyenv Python package manager
                  • Install python 3.13.3
                  pyenv install 3.13.3
                  • Make python 3.13.3. global
                  pyenv global 3.13.3
                  • Install mitmproxy version 9.0.0
                  pipx install mitmproxy==9.0.0
                  • install websockets
                  pipx install websockets 
                  • Run mitmproxy from terminal
                  mitmproxy or mitmproxy --version
                  Actual Result:
                  Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
                  Expected Result:
                  mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
                  Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
                  More Information
                  It seems that this modeule has been marked deprecated and removed from the latest python
                  https://peps.python.org/pep-0594/#imghdr
                  Test Environment
                  Mac Silicon chip
                  
macOS Sequoia 15.4
                  
websockets 15.0.1
                  Activity
                  Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    No labels
                    No labels
                    Type
                    No type
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                      Skip to content
                      [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
                      Open
                      Open
                      [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
                      Description
                      @itkhanz
                      itkhanz
                      opened on Apr 15, 2025
                      Steps to reproduce:
                      • Install pyenv Python package manager
                      • Install python 3.13.3
                      pyenv install 3.13.3
                      • Make python 3.13.3. global
                      pyenv global 3.13.3
                      • Install mitmproxy version 9.0.0
                      pipx install mitmproxy==9.0.0
                      • install websockets
                      pipx install websockets 
                      • Run mitmproxy from terminal
                      mitmproxy or mitmproxy --version
                      Actual Result:
                      Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
                      Expected Result:
                      mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
                      Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
                      More Information
                      It seems that this modeule has been marked deprecated and removed from the latest python
                      https://peps.python.org/pep-0594/#imghdr
                      Test Environment
                      Mac Silicon chip
                      
macOS Sequoia 15.4
                      
websockets 15.0.1
                      Activity
                      Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

                          Skip to content
                          [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
                          Open
                          Open
                          [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
                          Description
                          @itkhanz
                          itkhanz
                          opened on Apr 15, 2025
                          Steps to reproduce:
                          • Install pyenv Python package manager
                          • Install python 3.13.3
                          pyenv install 3.13.3
                          • Make python 3.13.3. global
                          pyenv global 3.13.3
                          • Install mitmproxy version 9.0.0
                          pipx install mitmproxy==9.0.0
                          • install websockets
                          pipx install websockets 
                          • Run mitmproxy from terminal
                          mitmproxy or mitmproxy --version
                          Actual Result:
                          Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
                          Expected Result:
                          mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
                          Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
                          More Information
                          It seems that this modeule has been marked deprecated and removed from the latest python
                          https://peps.python.org/pep-0594/#imghdr
                          Test Environment
                          Mac Silicon chip
                          
macOS Sequoia 15.4
                          
websockets 15.0.1
                          Activity
                          Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            No labels
                            No labels
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                            No type
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                              Skip to content
                              [Python 3.13] ModuleNotFoundError: No module named 'imghdr' #24
                              Open
                              Open
                              [Python 3.13] ModuleNotFoundError: No module named 'imghdr'#24
                              Description
                              @itkhanz
                              itkhanz
                              opened on Apr 15, 2025
                              Steps to reproduce:
                              • Install pyenv Python package manager
                              • Install python 3.13.3
                              pyenv install 3.13.3
                              • Make python 3.13.3. global
                              pyenv global 3.13.3
                              • Install mitmproxy version 9.0.0
                              pipx install mitmproxy==9.0.0
                              • install websockets
                              pipx install websockets 
                              • Run mitmproxy from terminal
                              mitmproxy or mitmproxy --version
                              Actual Result:
                              Traceback (most recent call last):
File "/Users/john.doe/.local/bin/mitmproxy", line 8, in<module>sys.exit(mitmproxy())
~~~~~~~~~^^
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/main.py", line 124, in mitmproxy
from mitmproxy.tools import console
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/__init__.py", line 1, in<module>
from mitmproxy.tools.console import master
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/master.py", line 27, in<module>
from mitmproxy.tools.console import consoleaddons
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/tools/console/consoleaddons.py", line 7, in<module>
from mitmproxy import contentviews
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/__init__.py", line 21, in<module>
from . import (
...<17 lines>...
)
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/__init__.py", line 1, in<module>
from .view import ViewImage
File "/Users/john.doe/.local/pipx/venvs/mitmproxy/lib/python3.13/site-packages/mitmproxy/contentviews/image/view.py", line 1, in<module>
import imghdr
ModuleNotFoundError: No module named 'imghdr'
                              Expected Result:
                              mitmproxy should start as usual in interactive mode from terminal and starts capturing the network traffic if proxy is set correctly, or it should display the version as it displays when downgraded python to 3.11.8
                              Mitmproxy: 9.0.1
Python: 3.11.8
OpenSSL: OpenSSL 3.0.7 1 Nov 2022
Platform: macOS-15.4-arm64-arm-64bit
                              More Information
                              It seems that this modeule has been marked deprecated and removed from the latest python
                              https://peps.python.org/pep-0594/#imghdr
                              Test Environment
                              Mac Silicon chip
                              
macOS Sequoia 15.4
                              
websockets 15.0.1
                              Activity
                              Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
                              Metadata
                              Metadata
                              Assignees
                              No one assigned
                                Labels
                                No labels
                                No labels
                                Type
                                No type
                                Projects
                                No projects
                                  Milestone
                                  No milestone
                                  Relationships
                                  None yet
                                  Development
                                  No branches or pull requests
                                  Issue actions